Influence of an Alternative Implant Design and Surgical Protocol on Primary Stability

Autor(es)

Mariana Lima da Costa Valente ^[1] ; Denise Tornavoi de Castro ^[2] ; Antônio Carlos Shimano ^[3] ; Andréa Cândido dos Reis ^[4]

Afiliação do(s) autor(es)

^[1] USP - Universidade de São Paulo. Department of Dental Materials and Prosthesis - Brasil

^[2] USP - Universidade de São Paulo. Department of Dental Materials and Prosthesis - Brasil

^[3] USP - Universidade de São Paulo. Medicine, and Rehabilitation of Locomotive Apparatus. Department of Biomechanics - Brasil

^[4] USP - Universidade de São Paulo. Department of Dental Materials and Prosthesis - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Dental Journal; v. 30, n. 1, p. 47-51, 2019-03-11.

Resumo

Abstract The purpose of thisin vitrostudy was to evaluate the influence of a new proposal of implant design and surgical protocol on primary stability in different bone densities. Four groups were tested (n=9): G1 - tapered, cone morse, Ø 4.3 mm x 10 mm in length (Alvim CM); G2 - experimental tapered; G3 - cylindrical, cone morse, Ø 4.0 mm x 11 mm in length (Titamax CM) and G4 - experimental cylindrical. The experimental implants were obtained from a design change in the respective commercial models. The insertion was performed in polyurethane (PU) blocks 0.24 g/cm3(20 pcf) and 0.64 g/cm3(40 pcf), according to different surgical protocols. The primary stability was measured by means of insertion torque (IT) and pullout test. Data were analyzed by ANOVA, Tukey’s test (α=0.05) and Pearson’s correlation. For IT and pullout, conventional and experimental implants showed no difference between them when inserted in the 20 pcf PU (p>0.05). In the 40 pcf PU, the modified implants exhibited greater IT (p<0.05) and lower pullout (p<0.05) compared to the respective conventional models. The implant design tested associated with the surgical protocol, positively influenced primary stability in higher density bones. (AU)

• Processo FAPESP: 12/09208-0 - Análise da estabilidade primária de implantes convencionais e modificados com diferentes formatos por meio de ensaios de desempenho, frequência de ressonância e caracterização micro estrutural
• Beneficiário: Andréa Cândido dos Reis
• Modalidade de apoio: Auxílio à Pesquisa - Regular